Arthur a



A. A. CRUSIUS.

AIR INLET DEVICE.

APPLICATION FILED FEB. 12, I911.

1 3 l 3, 58 4 Patented Aug. 19, 1919.

I j" ig/ /290 8 vweufoz ,drflzur a. (rasz'u Kid TED STATES PATENT QFFICEARTHUR A. CRUSIUS, OF NEW YORK-N. Y.

Specification of Letters Patent.

Ara-INLET DEVICE.

Patented Aug. 19, 1919..

Application filed February 12, 1917. Serial No. 148,055.

To'all whom it may concern:

Be it known that I, ARTHUR A. CRUSIUS, a citizen of the'United States ofAmerica, residing at New York city, Manhattan borough, county and Stateof New York, have invented certain new and useful Improvements inAir-Inlet Devices for Internal Combustion Motors, of which the followingis a full, clear and exact description.

Thisinvention relates to a device for the admission or introduction ofair to the combustible mixture created in the mixing chamber of thecarbureter of an internal combustion motor; in other words, my improveddevice, which consists partly of an auxiliary a1r-inletvalve, isarranged to permit air to be drawn into the duct through which thecombustible mixture is drawn by the suction of the pistons of a motor.The device also includes a perforated chamberarranged. for insertion,into the passage through which the combustible mixture,

passes. The said chamber can be inserted into the neck of a carbureter,or carried by a gasket-plate to be inserted between the flange of acarbureter and the flange of an intake -manifold, the valve being incommunication with said chamber. The erforated chamber is arranged toadmit air in proportion of the speed of the motor; Inv other words, atlow speed the motor will draw less air than at high speed. The combinedarea of the openlngs in the chamber will be sufficient to admit themaximum amount of air required. The amount of air drawn through theopenings in the chamber will be dependent upon the speed of the motor. I

I will now proceed to describe my invention in detail, the novelfeatures of which will be summarized in the appended claims, referencebeinghad to the. accompanying drawing, forming part hereof, wherein-Figure 1 is a diagrammatic side-view of a portion of a carbureter andintake-manifold, my improved device being illustrated as inie l'tiedbetween the carbureter and mani- Fig. 2 is a similar view, illustratingthe device as applied directly to the neck of a carbureter, the manifoldbeing omitted;

Fig. 3 is an enlarged detail view illustrating a gasket-plate havingapplied thereto my improved auxiliary air-chamber and a valve incommunication therewith; and

Fig. 4 is an enlarged fragmentary sec- .tional detail view, the sectionbeing taken on a line H in Fig. 3.

As herein embodied my inventlon consists of a chamber 5, which I termthe auxiliary air-chamber, which is preferably inserted in the passageor opening 6 of a gasket-plate 7 to be inserted between the flange 8' ofa carbureter 9 and the flange. 8 of an intake manifold 10,'as shown inFig. 1, or into the neck of said carbureter, as in Fig. The device isequally eflicient in both instances, the gasket-plate being employed onaccount of ready attachability to carbureters already installed. I Theinvention resides chiefly ,in the combination of elements re gardless ofpoint of attachment but, as be- 1' preferably employ a gasketof themotor-pistons, a ball-valve in this instance being employed to-close theduct 15. To regulate the vertical movement of the valve 16 I employ ascrew-threaded spindle 17. A duct 18 places the chamber 14 incommunication with the chamber 5. The chamber 5 comprises (in thisinstance) a substantially semi-cylindrical hollow rin 19 havin slots oropenings 20 in the wall thereof, sai

openings being directed toward the center of v the ring orduct throughwhich the combustible mixture passes on its way to the motor. The ringor chamber 5 (as is evident) is located in the central opening 6 of theplate 7, or may be located directly in the neck of the carbureter, thewall of said opening in the said plate. or in the neck of the carbureterforming the outer wall of the bore 21 of the chamber. g

It is quite evident that the suctionof the motor will draw air. throu hthe slots 01' openings 20 to be mixed with the mixture drawn from thecarbureter. At slow 5 eed air will be drawn in through some 0 theopenings 20; in other words, the suctionof the motor, at slow speed,will not be great enough to fill the bore of the chamber 5 with airdrawn in through the valve 12 and the air drawn in will very likely bedrawn in through those openings adjacent the duct 18. At high speed,however, air will be drawn into chamber 5 through all of the openings 20and hence will be thoroughly mixed withthe combustible mixture drawnfrom the carbureter.

As stated, a greater speed of the motor will correspondingly increasethe indraft of air and will bring more of the openings 20 into play. Theair thus drawn in is subjected to frictional resistance from the wallsof these openings to a much greater extent than if entering through asingle tube or passage of capacity equal ,to that of the aggregate ofsaid small inlets. This will have a certain braking effect increasingwith the speed of the motor and the number of such openings brought intouse, and such braking will make for steadiness, preventing suddenchanges of speed from causing irregular action and obviating alldisadvantage by disturbance of the valve in its functions due forexample to running over rough roads.

What I claim as my invention is:

1. An auxiliary air inlet for internal combustion engines, an intakeduct for the engine, a. ring U shaped in cross section and snuglyfitting within the intake duct forming between the wall of said duct andsaid ring an annular chamber, ports in said ring leading from thechamber to the intake duct and an inlet through the Wall of said ductcommunicating with said chamber.

2. An auxiliary air inlet for internal com bustion engines, comprising agasket-plate having a central passage therethrough and a ring U shapedin cross section snugly fitti-ng Within the gasket-plate opening andforming therein an annular chamber, said ring provided with a pluralityof openings leading from the chamber to said central passage anclaninlet leading to said chamher.

3. An auxiliary air inlet for internal combustion engines, comprisin aasket-plate having a central passage t erethrough and a ring U shaped incross section snugly fitting within the gasket-plate opening and formingtherein an annular chamber, said ring provided with a plurality ofradially arranged slotted outlets leading from the chamber to thecentral passage and a single inlet leading to said chamber.

Signed at New York city, N. Y., this 10th day of February, 1917.

ARTHUR .A. CRUSIUS.

Witnesses:

EDUARD A. JANIs, MAURICE BLOCK.

